Yes I've heard all the push-pull gun stories, and the not enough power stuff, straight argon gas, and the clean-it super well song. I guess the only way to find out is to buy some wire, all the acessories, and go for it. I'm sure many on this board want the best machine for the job. That makes sense with a professional welder. Even a wealthy tinkerer. I am neither of these! Sounds like it might word OK for me. If not, oh well. I suppose there are limits to what it'll weld, but I plan on keeping the thickness way down. I would imagine with large thick pieces of al the heat is sucked out of the weld area very fast.